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A133551 as a simple table

na(n)
01
12
24
38
415
526
642
774
8132
9236
10421
11747
121314
132318
144101
157263
1612864
1722773
1840291
1971272
20126099
21223144
22394895
23698823
241236609
252188185
263872000
276851631
2812124307
2921454602
3037964931
3167180507
32118878510
33210360283
34372241362
35658697067

[1,2,4,8,15,26,42,74,132,236,421,747,1314,2318,
 4101,7263,12864,22773,40291,71272,126099,223144,
 394895,698823,1236609,2188185,3872000,6851631,
 12124307,21454602,37964931,67180507,118878510,
 210360283,372241362,658697067]